Počet záznamů: 1
Crack Growth Modelling in the Silicon Nitride Ceramics by Application of the Cohesive Zone Approach
- 1.
SYSNO ASEP 0434890 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Crack Growth Modelling in the Silicon Nitride Ceramics by Application of the Cohesive Zone Approach Tvůrce(i) Kozák, Vladislav (UFM-A) RID, ORCID
Chlup, Zdeněk (UFM-A) RID, ORCIDCelkový počet autorů 2 Zdroj.dok. Materials Structure and Micromechanics of Fracture VII. - Zurich : Trans Tech Publications, 2014 / Šandera P. - ISSN 1013-9826 - ISBN 978-3-03785-934-6 Rozsah stran s. 193-196 Poč.str. 4 s. Forma vydání Tištěná - P Akce MSMF 7 - International Conference on Materials Structure & Micromechanics of Fracture /7./ Datum konání 01.07.2013-03.07.2013 Místo konání Brno Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova cohesive zone model ; Si 3 N 4 composite ; finite element user’s procedure Vědní obor RIV JL - Únava materiálu a lomová mechanika Institucionální podpora UFM-A - RVO:68081723 UT WOS 000336694400041 EID SCOPUS 84891864144 DOI 10.4028/www.scientific.net/KEM.592-593.193 Anotace Specific silicon nitride based materials are considered according to certain practical requirements of process, the influence of the grain size and orientation on the bridging mechanisms was found. Crack-bridging mechanisms can provide substantial increases in toughness coupled with the strength in ceramics. The prediction of the crack propagation through interface elements based on the fracture mechanics approach and cohesive zone model is investigated and from the amount of damage models the cohesive models seem to be especially attractive for the practical applications. Using cohesive models the behaviour of materials is realized by two types of elements. The former is the element for classical continuum and the latter is the connecting cohesive element. Within the standard finite element package Abaqus a new finite element has been developed; it is written via the UEL (user’s element) procedure. Its shape can be very easily modified according to the experimental data for the set of ceramics and composites. The new element seems to be very stable from the numerical point a view. The shape of the traction separation law for three experimental materials is estimated from the macroscopic tests, J–R curve is predicted and stability of the bridging law is tested. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2015
Počet záznamů: 1